- principal rafter
-
a diagonal member of a roof principal, usually forming part of a truss and supporting the purlins on which the common rafters rest. See diag. under king post.[1655-65]
* * *
Universalium. 2010.
principal rafter
Look at other dictionaries:
principal rafter — noun : one of the upper diagonal members of a roof truss supporting the purlins and common rafters or those joints to which the roof boarding is secured see roof illustration * * * a diagonal member of a roof principal, usually forming part of a… … Useful english dictionary
Rafter — This unusual surname recorded in the spellings of Rafter, Raftiss and Wrafter, is Irish. It seems to originate from the popular clan name of O Raferty, as it seems that in the registers of County Mayo, the spellings are quite interchangeable upto … Surnames reference
principal — adj. & n. adj. 1 (usu. attrib.) first in rank or importance; chief (the principal town of the district). 2 main, leading (a principal cause of my success). 3 (of money) constituting the original sum invested or lent. n. 1 a head, ruler, or… … Useful english dictionary
rafter dam — noun Etymology: rafter (I) : a dam formed by long horizontal timbers set at an angle to the banks and meeting in the center of the stream like the rafters of a roof principal … Useful english dictionary
principal — adjective 1》 first in order of importance; main. 2》 denoting an original sum of money invested or lent. noun 1》 the most important or senior person in an organization or group. ↘the head of a school or college. ↘(in certain professions) a … English new terms dictionary
principal — a. chief; main; Finance, relating to a capital sum lent or invested; n. head, especially of a school, college, etc.; leading actor, singer or orchestral player; Law, person for whom another acts as agent; person responsible for a crime;… … Dictionary of difficult words
auxiliary rafter — noun : a rafter used to strengthen the principal rafter in a truss * * * 1. a rafter reinforcing a principal rafter. 2. a rafter reinforcing a diagonal member of a queen post truss. Also called cushion rafter … Useful english dictionary
knee rafter — noun : a diagonal brace between a principal rafter and a tie beam * * * 1. a rafter for maintaining the angle between a principal rafter and a tie or collar beam. 2. a rafter bent downward at the lower end. Also called crook rafter. [1670 80] … Useful english dictionary
auxiliary rafter — 1. a rafter reinforcing a principal rafter. 2. a rafter reinforcing a diagonal member of a queen post truss. Also called cushion rafter. * * * … Universalium
knee rafter — 1. a rafter for maintaining the angle between a principal rafter and a tie or collar beam. 2. a rafter bent downward at the lower end. Also called crook rafter. [1670 80] * * * … Universalium
